Help needed with VAG codes

Z

zerocool

Member
I have an Audi A2 52 plate 1.4 petrol

The ECP light is on and also engine management light

Took the car to be checked and got the following report:

VAG code 17809 - EGR Valve (N18) P1401 - 35-00 - short to ground
VAG code 16955 - Brake Switch (f) P0571 35-00 Implausible Signal
VAG code 17851 - Potentiometer for EGR (G212) P1443 35-10 Singnal too Low- Intermittent

Any idea how I can fix this after they reset the ECP and engine management light it came back after driving off not even 1 min later.

Please help
 
Hi when you say ECP do you mean the ESP light? if so the first thing i would change is the brake light switch-as this can influence random other codes being set off. Its a common issue.
Try that and report back cheers mike
 
zerocool said:
I have an Audi A2 52 plate 1.4 petrol

The ECP light is on and also engine management light

Took the car to be checked and got the following report:

VAG code 17809 - EGR Valve (N18) P1401 - 35-00 - short to ground
VAG code 16955 - Brake Switch (f) P0571 35-00 Implausible Signal
VAG code 17851 - Potentiometer for EGR (G212) P1443 35-10 Singnal too Low- Intermittent

Any idea how I can fix this after they reset the ECP and engine management light it came back after driving off not even 1 min later.

Please help
Click to expand...

Check that your brake lights are working properly, get someone to stand behind and operate them several times. I would imagine that you have a dodgy brake switch.

That won't affect the EGR error but it will be responsible for the warning lights.

Steve B
 
As suggested get the brake light switched changed ASAP. They do seem to be a very weak link and indeed I had to have two genuine Audi ones fitted before similar problems settled down!
 
zerocool said:
How easy is it to do it yourself ---brake light switched change ?
Click to expand...

There are instructions on here somewhere.
No tools are required and you might have to be a bit of a contortionist but it is very doable and not worth paying for labour costs.

Steve B
 
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